Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations (readOnlyHint, openWorldHint, idempotentHint) are consistent with the description which states it retrieves patent applications from external databases (USPTO, WIPO) and returns a list of inventions. No contradictions. Description adds details about output fields (assignment status, filing dates, ownership gaps) beyond what annotations provide.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.